Hsin-Yi ChenHong-Fu ChouMAO-CHAO LINShih-Kai Lee2018-09-102018-09-102010-0100189464http://scholars.lib.ntu.edu.tw/handle/123456789/359221https://www.scopus.com/inward/record.uri?eid=2-s2.0-73249125408&doi=10.1109%2fTMAG.2009.2028340&partnerID=40&md5=c79263bf672b7c19940c703d87ac58a4We propose two constructions for multilevel run-length-limited (RLL) block codes for which the rates are very close to the capacity. For each code construction, we propose a variation that has the advantage of low complexity of encoding and decoding. We conducted a simulation to see the combined effect of channel coding and our proposed RLL coding over an optical recording channel. © 2009 IEEE.Constrained codes; Multilevel run-length-limited codes; Optical recording channelCode construction; Combined effect; Constrained codes; Encoding and decoding; Low complexity; Optical recording channels; Recording systems; Run length limiteds; Run-length-limited code; Block codes; Channel coding; Optical disk storage; Optical recordingjournal article10.1109/TMAG.2009.20283402-s2.0-73249125408WOS:000273089500014